Mallett, who will turn 29 on June 5, is an intriguing strong-armed passer and has been a model backup for the Ravens.

He led an upset of the AFC North rival Pittsburgh Steelers in 2015 before being limited to six passes last season behind a healthy Joe Flacco. More importantly, Mallett was never a distraction in Baltimore. It was two years ago when Mallett was cut by the Houston Texans for being late for meetings and missing a team charter flight.

The biggest challenge for Mallett now is consistency. He has never completed more than 60 percent of his passes in a season, and he has never thrown more touchdowns than interceptions in a season.

Mallett has a 3-5 career record as a starter. A third-round pick by the New England Patriots in 2011, he was traded to the Texans in 2014 before joining the Ravens in December 2015.